forked from mirrors/gecko-dev
ccd8a17bd4
Depends on D145738 Differential Revision: https://phabricator.services.mozilla.com/D145739
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_Exceptions_h__
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#define mozilla_dom_Exceptions_h__
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// DOM exception throwing machinery (for both main thread and workers).
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#include <stdint.h>
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#include "jspubtd.h"
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#include "nsString.h"
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#include "jsapi.h"
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class nsIStackFrame;
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class nsPIDOMWindowInner;
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template <class T>
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struct already_AddRefed;
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namespace mozilla::dom {
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class Exception;
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// If we're throwing a DOMException and message is empty, the default
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// message for the nsresult in question will be used.
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bool Throw(JSContext* cx, nsresult rv, const nsACString& message = ""_ns);
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// Create, throw and report an exception to a given window.
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void ThrowAndReport(nsPIDOMWindowInner* aWindow, nsresult aRv);
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// Both signatures of ThrowExceptionObject guarantee that an exception is set on
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// aCx before they return.
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void ThrowExceptionObject(JSContext* aCx, Exception* aException);
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// Create an exception object for the given nsresult and message. If we're
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// throwing a DOMException and aMessage is empty, the default message for the
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// nsresult in question will be used.
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//
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// This never returns null.
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already_AddRefed<Exception> CreateException(nsresult aRv,
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const nsACString& aMessage = ""_ns);
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// aMaxDepth can be used to define a maximal depth for the stack trace. If the
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// value is -1, a default maximal depth will be selected. Will return null if
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// there is no JS stack right now.
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already_AddRefed<nsIStackFrame> GetCurrentJSStack(int32_t aMaxDepth = -1);
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// Internal stuff not intended to be widely used.
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namespace exceptions {
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already_AddRefed<nsIStackFrame> CreateStack(JSContext* aCx,
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JS::StackCapture&& aCaptureMode);
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// Like the above, but creates a JSStackFrame wrapper for an existing
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// JS::SavedFrame object, passed as aStack.
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already_AddRefed<nsIStackFrame> CreateStack(JSContext* aCx,
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JS::Handle<JSObject*> aStack);
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} // namespace exceptions
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} // namespace mozilla::dom
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#endif
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